基于系统测温的矸石山自燃状况评估方法

Assessment Approach of Spontaneous Combustion Condition for Coal Gangue Heaps Based on Systematic Temperature Measurement

为了解决自燃矸石山治理过程中的测温难点,准确评估其火情状况,与工程实践相结合,建立了一套系统测温方法。系统测温方法按温度级将自燃矸石山划分为4个区:防控区、临界区、蓄热区以及发火区;测温从水平和垂直2个方向逐渐逼近高温区,直至锁定矸石山内部发火区。应用该方法对乌海美方矿1座矸石山进行系统测温,依据测温结果准确判定出防控区、临界区、蓄热区及发火区,其中,发火区及蓄热区作为灭火施工的重点区域,主要位于边坡中上部。研究认为,该方法省时省力地评估了矸石山的自燃状况,测温评估结果直接指导自燃矸石山的灭火施工。

In order to solve the difficulties of temperature measurement in the process of governing spontaneous combustion coal gangue heaps and assess the combustion condition precisely, we established the systematic temperature measurement method based on engineering practice. Using the systematic temperature measurement method, spontaneous combustion coal gangue heaps were divided into four areas according to the temperature level： safety area, critical area, heat storage area and ignition area. Temperature measurement approached the high temperature zone gradually from the horizontal and vertical directions until the ignition area of coal gangue heaps. Systematic temperature measurement method was applied to a coal gangue heap in Wuhai Meifang Mine, and safety area, critical area, heat storage area and ignition area are determined according to the results of temperature measurement, and heat storage area and ignition area as the key areas of outfire construction should be located in the upper part of the slope. This method can save time and manpower to assess the status of spontaneous combustion of coal gangue heaps, and the temperature measurement and evaluation results directly guided the construction process of outfire constuction.